Now, JL, this may sound kinda weird to you, I am sure you have good reasoning for your decisions, but........
Why would you do your PPL in the UK, even if there are (as mentioned before) schools in Spain, teaching with UK instructors and training you for a UK PPL?!
Especially if you want to do all your remaining licenses in Spain?!?!?!
Maybe draw that up on a sheet of paper again.
If you want to learn English, go take classes, don't go to the UK to get a UK PPL.